    <form>
    <div id ="alertas"></div>
        <table>
            <tr>
                <td>Número do processo</td>
                <td> <input name ='num_processo' size ='15' maxlength ='3' id = 'processo' onkeydown='mascara(this,soNumeros)'></td>
            </tr>
            <tr>
                <td>Ano</td>
                <td> <input name ='ano_processo' size ='4' maxlength ='4' id = 'ano_processo' onkeydown='mascara(this,soNumeros)'></td>
            </tr>
        </table>
    <div id ="botoes">
        <button type = 'button' onclick = 'buscaProcesso()'>Buscar</button>
        <button type = 'button' onclick = 'retornar()'>Cancelar</button>
    </div>
    </form>